CN204760426U - Light -emitting diode packaging structure - Google Patents
Light -emitting diode packaging structure Download PDFInfo
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- CN204760426U CN204760426U CN201520467469.6U CN201520467469U CN204760426U CN 204760426 U CN204760426 U CN 204760426U CN 201520467469 U CN201520467469 U CN 201520467469U CN 204760426 U CN204760426 U CN 204760426U
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- material layer
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- package structure
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- 238000004806 packaging method and process Methods 0.000 title abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 105
- 239000012780 transparent material Substances 0.000 claims abstract description 41
- 230000001788 irregular Effects 0.000 claims abstract description 6
- 230000009466 transformation Effects 0.000 claims description 42
- 230000003287 optical effect Effects 0.000 claims description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 239000010931 gold Substances 0.000 claims description 3
- 230000007704 transition Effects 0.000 abstract description 4
- 230000002349 favourable effect Effects 0.000 abstract 1
- 239000003292 glue Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000002310 reflectometry Methods 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 238000007598 dipping method Methods 0.000 description 3
- 238000005538 encapsulation Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 210000004276 hyalin Anatomy 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Abstract
The utility model discloses a light -emitting diode packaging structure, its characterized in that: a reflective material layer who has the through -hole, face down chip is located on the reflective material layer, just face down chip's electrode inlay in a reflective material layer's through -hole, a transparent material layer surrounds the side surface of face down chip except that the electrode, the 2nd reflective material layer surrounds a transparent material layer, wherein a transparent material layer with reflective material layer's interface is inclined plane or cambered surface or irregular appearance, is favorable to making face down chip's upwards reflection of light, cover wavelength transition material layer on above -mentioned structure.
Description
Technical field
The utility model relates to a kind of encapsulating structure, particularly a kind of package structure for LED.
Background technology
Light-emitting diode (English is LightEmittingDiode, is called for short LED) is a kind of light emitting semiconductor device utilizing the P-N junction electroluminescent principle of semiconductor to make.The advantages such as LED has environmental protection, brightness is high, low in energy consumption, the life-span is long, operating voltage is low, easy of integrationization are the forth generation new light sources after incandescent lamp, fluorescent lamp and high-intensity discharge (English abbreviation HID) lamp.
Traditional LED encapsulation structure is die bond, bonding wire, envelope fluorescent glue on metallic support.Recent use flip-chip level encapsulation is very popular, and this encapsulation does not use substrate, does not also need bonding wire, directly on chip, covers fluorescent glue, then cuts.Its light emitting anger is comparatively large, be suitable for the application such as bulb lamp, but in some other application, as the aspect such as shot-light, backlight, light emitting anger becomes greatly its shortcoming.
Chinese patent CN101872817 discloses the package structure for LED of a kind of tool Jiao Qiang, comprise and be placed in light-emitting diode chip for backlight unit on ceramic substrate and Jiao Qiang, and the packaging plastic of covering luminousing diode chip and Jiao Qiang, Jiao Qiang has closed circulation shape to surround light-emitting diode chip for backlight unit, but do not contact, the height of Jiao Qiang is greater than the height of light-emitting diode chip for backlight unit, and in space between light-emitting diode chip for backlight unit and glue wall, fill up the packaging plastic that transparent material forms, and the top of packaging plastic has convex surfaces, optically focused effect can be provided, and the edge of convex surfaces is alignment glue coping.Relative altitude difference between this patent utilization light-emitting diode chip for backlight unit and glue wall and lateral separation to determine lighting angle, and do not need additional configuration convex lens, thus can simplify overall package structure, and improve the reliability of practical operation.But have the following disadvantages: (1) encapsulating structure needs to be installed on ceramic substrate, volume is comparatively large, is unfavorable for integrated; (2) Jiao Qiang is vertical configuration, is unfavorable for light upwards outgoing, and optical efficiency is got in impact.
Summary of the invention
Technical problem to be solved in the utility model overcomes the deficiencies in the prior art, a kind of package structure for LED is provided, in conjunction with the advantage with bowl cup that traditional SMD encapsulates, and it does not need board structure, cost reduces, and thermal resistance reduces, and the similar lambert of light emitting anger is luminous, the optical design of application end is simple, can realize higher light efficiency simultaneously.
According to first aspect of the present utility model, package structure for LED, is characterized in that:
There is the first reflective material layer of through hole;
Flip-chip, is positioned on described first reflective material layer, and the electrode of described flip-chip is embedded in the through hole of described first reflective material layer;
First transparent material layer, surrounds described flip-chip side surface in addition to an electrode;
Second reflective material layer, surrounds described first transparent material layer, and the interface of wherein said first transparent material layer and described reflective material layer is inclined-plane or cambered surface or irregular pattern, is conducive to making the light of flip-chip upwards to reflect;
Material for transformation of wave length layer is covered on said structure.
Preferably, the upper surface of described second reflective material layer and the described upper surface of the first transparent material layer, the upper surface flush of flip-chip, and define aforementioned upper surface formation surface altogether.
Preferably, described material for transformation of wave length layer is positioned on described surface altogether.
Preferably, the bottom interior edge of described second reflective material layer contacts with described flip-chip side surface.
Preferably, there is certain interval in the bottom interior edge of described second reflective material layer and described flip-chip side surface.
Preferably, material for transformation of wave length is not comprised in described first transparent material layer.
Preferably, material for transformation of wave length is comprised in described first transparent material layer.
Preferably, the interface of described first transparent material and described second reflective material layer is inclined-plane, cambered surface or irregular pattern.
Preferably, in the interface of described first transparent material layer and described second reflective material layer, an optical reflecting layer is inserted.
Preferably, the upper surface of described material for transformation of wave length layer is plane, and its thickness is 5 μm ~ 200 μm.
Preferably, the upper surface of described material for transformation of wave length layer has alligatoring.
Preferably, the upper surface of described material for transformation of wave length layer is provided with arcuate structure.
Preferably, described material for transformation of wave length layer is provided with optical lens.
Preferably, described copline arranges a selectivity blooming, make described selectivity blooming between described copline and material for transformation of wave length layer.
Preferably, the characteristic of described selectivity blooming is: have higher transmissivity for blue light, has higher reflectivity for green glow, gold-tinted and ruddiness.
Preferably, the electrode of described flip-chip contains copper or gold, and its thickness is 1 μm ~ 100 μm.
Preferably, described material for transformation of wave length layer covers the second transparent material layer.
According to second aspect of the present utility model, package structure for LED, is characterized in that:
There is the first reflective material layer of through hole;
The flip-chip of inverted trapezoidal structure, is positioned on described first reflective material layer, and the electrode of described flip-chip is embedded in the through hole of described first reflective material layer;
Second reflective material layer, surrounds the flip-chip of described inverted trapezoidal structure, and the interface of wherein said second reflective material layer and described flip-chip forms optics cup, is conducive to making the light of flip-chip upwards to reflect;
Material for transformation of wave length layer is covered on said structure.
Package structure for LED of the present utility model, encapsulates ratio with traditional SMD, at least comprises following technique effect: (1), without board structure, cost of manufacture reduces, and encapsulating structure size can change more neatly; (2) owing to employing the uniform material for transformation of wave length layer of thickness, color dot output is more concentrated; (3) packaging body thermal resistance is low.
Compared with existing wafer-level package technology, the utility model at least comprises following technique effect: (1) light-emitting area is approximately lambert's light-emitting area, and light emitting anger can control, at about 120 °, can be applied to the fields such as display system backlight, shot-light; (2) owing to arranging the reflective material layer of inclined-plane or cambered surface or irregular appearance structure, be conducive to making the light of flip-chip upwards to reflect, there is higher light efficiency; (3) fill organic material between flip chip electrode, and electrode is thicker, can discharge to a certain extent application end use time pcb board to the stress of chip.
Other features and advantages of the utility model will be set forth in the following description, and, partly become apparent from specification, or understand by implementing the utility model.The purpose of this utility model and other advantages realize by structure specifically noted in specification, claims and accompanying drawing and obtain.
Accompanying drawing explanation
Accompanying drawing is used to provide further understanding of the present utility model, and forms a part for specification, is used from explanation the utility model, does not form restriction of the present utility model with embodiment one of the present utility model.In addition, accompanying drawing data describe summary, is not draw in proportion.
The profile of package structure for LED described in the embodiment 1 that Fig. 1 is the utility model.
The profile of package structure for LED described in the embodiment 2 that Fig. 2 is the utility model.
The profile of package structure for LED described in the embodiment 3 that Fig. 3 is the utility model.
The profile of package structure for LED described in the embodiment 4 that Fig. 4 is the utility model.
The profile of package structure for LED described in the embodiment 5 that Fig. 5 is the utility model.
The profile of package structure for LED described in the embodiment 6 that Fig. 6 is the utility model.
The profile of package structure for LED described in the embodiment 7 that Fig. 7 is the utility model.
The profile of package structure for LED described in the embodiment 8 that Fig. 8 is the utility model.
The profile of package structure for LED described in the embodiment 9 that Fig. 9 is the utility model.
The profile of package structure for LED described in the embodiment 10 that Figure 10 is the utility model.
The profile of package structure for LED described in the embodiment 11 that Figure 11 is the utility model.
The profile of package structure for LED described in the embodiment 12 that Figure 12 is the utility model.
The profile of package structure for LED described in the embodiment 13 that Figure 13 is the utility model.
The profile of package structure for LED described in the embodiment 14 that Figure 14 is the utility model.
In figure, each label is expressed as follows:
101: the first reflective material layers; 102: flip-chip; 1021,1022: electrode; 103: the second reflective material layers; 104: the first transparent material layers; 105: material for transformation of wave length layer; 106: the second transparent material layers; 107: selectivity blooming: 108: optical lens; 109: optical reflecting layer.
Embodiment
Below in conjunction with schematic diagram, LED body of the present utility model is described in detail, before introducing the utility model further, should be appreciated that owing to can transform specific embodiment, therefore, the utility model is not limited to following specific embodiment.It is also understood that therefore adopted embodiment is introductory, instead of restrictive because scope of the present utility model is only defined by the following claims.Unless otherwise stated, all technology used are here identical with the meaning that those of ordinary skill in the art generally understands with scientific words.
embodiment 1
As shown in Figure 1, present embodiment discloses a kind of package structure for LED, be made up of flip-chip 102, first reflective material layer 101, second reflective material layer 103, first transparent material layer 104 and material for transformation of wave length layer 105.
Wherein flip-chip 102, be positioned at there is through hole the first reflective material layer 101 on, the electrode 1021 of flip-chip 102 and electrode 1022 are embedded in the through hole of described first reflective material layer 101, and namely the side surface of electrode or component side surface are surrounded by the first reflective material layer 101.The wherein one of positive and negative two electrodes (1021 and 1022) containing metallic copper or gold of flip-chip 102, its thickness is between 10 μm ~ 100 μm.First reflective material layer 101 and thicker electrode can discharge to a certain extent application end use time PCB to the stress of flip-chip.The thickness of the first reflective material layer is thinner relative to the thickness of electrode, and its bottom surface can lower than the bottom surface of chip electrode, or concordant with electrode bottom surface, or higher than the bottom surface of chip electrode, but thickness difference is no more than 10 μm.First transparent material layer 104, surrounds described flip-chip side surface in addition to an electrode; Second reflective material layer 103 is positioned on the first reflective material layer 101, surround described first transparent material layer 104, form the shape of bowl cup, opening is wide at the top and narrow at the bottom, be inclined-plane with the interface of the first transparent material layer 104, be conducive to the inside reflexing to material for transformation of wave length layer 105 from the light of chip outgoing via this interface, thus promote and get light light efficiency.
In addition, the bottom interior edge of the second reflective material layer 103 contacts with the side surface of flip-chip 102, when the angle of inclination of the second reflective material layer/the first hyaline layer interface can be made constant, the light-emitting area of encapsulating structure reduces, and is so conducive to the design of subsequent optical lens.
Moreover upper surface, second reflective material layer 103 of flip-chip 102 are concordant with the upper surface of the first transparent material layer 104, and define aforementioned upper surface formation surface altogether.Material for transformation of wave length layer 105 upper and lower surface is plane, its thickness is between 5 μm ~ 200 μm, be covered in flip-chip 102, on the first transparent material layer 104 and the second reflective material layer 103, at least will cover the upper surface of flip-chip 102 and the first transparent material layer 104 completely.Because material for transformation of wave length layer 105 upper and lower surface is plane, thickness is even, and the color dot concentration degree of encapsulating structure is high.In addition, because this encapsulating structure does not have substrate, also without the need to using crystal-bonding adhesive, but chip electrode is directly exposed, therefore has lower thermal resistance.
embodiment 2
As shown in Figure 2, compared with embodiment 1, there is certain interval in bottom interior edge and described flip-chip 102 side surface of second reflective material layer 103 of the present embodiment, so can increase light-emitting area under the prerequisite keeping flip-chip size constancy, has lifting to a certain degree to light efficiency.
embodiment 3
As shown in Figure 3, compared with embodiment 1, in first transparent material layer 104 of the present embodiment, comprise material for transformation of wave length.As added ruddiness transition material in the first transparent material layer, and in material for transformation of wave length layer 105, only there are gold-tinted or green glow transition material, thus avoid gold-tinted or green glow by ruddiness transition material double absorption, effectively can promote light efficiency.
embodiment 4
As shown in Figure 4, compared with embodiment 1, first transparent material layer 104 of the present embodiment is convex globoidal with the interface of described second reflective material layer 103, after reflecting from the light of chip outgoing via interface, wavelength conversion layer is injected in the upwards partially outer direction of light, be conducive to the brightness and the color homogeneity that improve whole light-emitting area, and the brightness of different angles and the uniformity of color.。
embodiment 5
As shown in Figure 5, compared with embodiment 4, the present embodiment: bottom interior edge and described flip-chip 102 side surface of described second reflective material layer 103 exist certain interval, and its object is identical with embodiment 2.
embodiment 6
As shown in Figure 6, compared with embodiment 1, first transparent material layer 104 of the present embodiment is cancave cambered surface with the interface of described second reflective material layer 103, is conducive to strengthening bright dipping further.
embodiment 7
As shown in Figure 7, compared with embodiment 1, the present embodiment inserts an optical reflecting layer 109(as Ag metallic reflector or DBR etc. in the first transparent material layer 104 with the interface of described second reflective material layer 103), this layer of reflectivity, higher than the reflectivity of the second reflective material layer 103, is conducive to strengthening bright dipping further.
embodiment 8
As shown in Figure 8, compared with embodiment 1, the present embodiment covers the second transparent material layer 106 on described material for transformation of wave length layer, can effectively protect material for transformation of wave length layer not contaminated and destroy.
embodiment 9
As shown in Figure 9, compared with embodiment 1, the present embodiment: wrap up the second transparent material layer 106 at described material for transformation of wave length layer 105, technique effect is with embodiment 8.
embodiment 10
As shown in Figure 10, compared with embodiment 1, the present embodiment: arrange a selectivity blooming 107 in described copline, makes described selectivity blooming 107 between described copline and material for transformation of wave length layer 105.Wherein the characteristic of selectivity blooming is: have higher transmissivity for blue light, has higher reflectivity for green glow, gold-tinted and ruddiness.
embodiment 11
As shown in figure 11, compared with embodiment 1, the present embodiment is provided with the optical lens 108 of arcuate structure on described material for transformation of wave length layer 105.
embodiment 12
As shown in figure 12, compared with embodiment 1, the upper surface of the material for transformation of wave length layer 105 of the present embodiment has alligatoring, so can increase light further and take out, improve light efficiency.
embodiment 13
As shown in figure 13, compared with embodiment 1, the material for transformation of wave length layer 105 of the present embodiment is covered in above flip-chip 102, and specifically, material for transformation of wave length layer 105 is coated on flip-chip 102 completely, but is not covered to the upper surface of the first transparent material layer 104.First transparent material layer 104 surrounds the surface of material for transformation of wave length layer or wraps up the outer surface of whole material for transformation of wave length layer, due to material for transformation of wave length layer and chip contact-making surface larger relative to embodiment 1, the heat being conducive to material for transformation of wave length layer is conducted by chip, reduce surface temperature when using, reliability is higher.
embodiment 14
As shown in figure 14, compared with embodiment 1, the flip-chip of the present embodiment 102 in inverted trapezoidal, and saves and arranges the first transparent material layer, and can reduce packaging cost, output concentration degree is higher, and makes manufacture craft simpler; In addition, the second reflective material layer 103 directly surrounds the flip-chip 102 of described inverted trapezoidal structure, and wherein said second reflective material layer 103 forms optics cup with the interface of described flip-chip 102, is conducive to making the light of flip-chip upwards to reflect, increases bright dipping.
Should be understood that, above-mentioned specific embodiments is only part preferred embodiment of the present utility model, and above embodiment can also carry out various combination, distortion.Scope of the present utility model is not limited to above embodiment, and all any changes done according to the utility model, all belong within protection range of the present utility model.
Claims (17)
1. package structure for LED, is characterized in that:
There is the first reflective material layer of through hole;
Flip-chip, is positioned on described first reflective material layer, and the electrode of described flip-chip is embedded in the through hole of described first reflective material layer;
First transparent material layer, surrounds described flip-chip side surface in addition to an electrode;
Second reflective material layer, surrounds described first transparent material layer, and the interface of wherein said first transparent material layer and described reflective material layer is inclined-plane or cambered surface or irregular pattern, is conducive to making the light of flip-chip upwards to reflect;
Material for transformation of wave length layer is covered on said structure.
2. package structure for LED according to claim 1, is characterized in that: the upper surface of described second reflective material layer and the described upper surface of the first transparent material layer, the upper surface flush of flip-chip, and defines aforementioned upper surface formation surface altogether.
3. package structure for LED according to claim 2, is characterized in that: described material for transformation of wave length layer is positioned on described surface altogether.
4. package structure for LED according to claim 1, is characterized in that: the bottom interior edge of described second reflective material layer contacts with described flip-chip side surface.
5. package structure for LED according to claim 1, is characterized in that: bottom interior edge and the described flip-chip side surface of described second reflective material layer exist certain interval.
6. package structure for LED according to claim 1, is characterized in that: do not comprise material for transformation of wave length in described first transparent material layer.
7. package structure for LED according to claim 1, is characterized in that: comprise material for transformation of wave length in described first transparent material layer.
8. package structure for LED according to claim 1, is characterized in that: the interface of described first transparent material and described second reflective material layer is inclined-plane, cambered surface or irregular pattern.
9. package structure for LED according to claim 1, is characterized in that: in the interface of described first transparent material layer and described second reflective material layer, insert an optical reflecting layer.
10. package structure for LED according to claim 1, its characteristic is: the upper surface of described material for transformation of wave length layer is plane, and its thickness is 5 μm ~ 200 μm.
11. package structure for LED according to claim 1, its characteristic is: the upper surface of described material for transformation of wave length layer has alligatoring.
12. package structure for LED according to claim 1, its characteristic is: the upper surface of described material for transformation of wave length layer is provided with arcuate structure.
13. package structure for LED according to claim 1, its characteristic is: described material for transformation of wave length layer is provided with optical lens.
14. package structure for LED according to claim 2, its characteristic is: on described surface altogether, arrange a selectivity blooming, and described selectivity blooming is total between surface and material for transformation of wave length layer between described.
15. package structure for LED according to claim 1, its characteristic is: on described material for transformation of wave length layer, cover the second transparent material layer.
16. package structure for LED according to claim 1, is characterized in that: the electrode of described flip-chip contains copper or gold, and its thickness is 10 μm ~ 100 μm.
17. package structure for LED, is characterized in that:
There is the first reflective material layer of through hole;
The flip-chip of inverted trapezoidal structure, is positioned on described first reflective material layer, and the electrode of described flip-chip is embedded in the through hole of described first reflective material layer;
Second reflective material layer, surrounds the flip-chip of described inverted trapezoidal structure, and the interface of wherein said second reflective material layer and described flip-chip forms optics cup, is conducive to making the light of flip-chip upwards to reflect;
Material for transformation of wave length layer is covered on said structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520467469.6U CN204760426U (en) | 2015-07-02 | 2015-07-02 | Light -emitting diode packaging structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520467469.6U CN204760426U (en) | 2015-07-02 | 2015-07-02 | Light -emitting diode packaging structure |
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| Publication Number | Publication Date |
|---|---|
| CN204760426U true CN204760426U (en) | 2015-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520467469.6U Withdrawn - After Issue CN204760426U (en) | 2015-07-02 | 2015-07-02 | Light -emitting diode packaging structure |
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| CN (1) | CN204760426U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105006508A (en) * | 2015-07-02 | 2015-10-28 | 厦门市三安光电科技有限公司 | Light emitting diode packaging structure |
-
2015
- 2015-07-02 CN CN201520467469.6U patent/CN204760426U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105006508A (en) * | 2015-07-02 | 2015-10-28 | 厦门市三安光电科技有限公司 | Light emitting diode packaging structure |
| CN105006508B (en) * | 2015-07-02 | 2017-07-25 | 厦门市三安光电科技有限公司 | Package structure for LED |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151111 Effective date of abandoning: 20170725 |
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| AV01 | Patent right actively abandoned |